PRESTIGE's skilled actress Umi Yatsugake experiences the shocking journey of reaching a trance state for the first time in her life through four intense pleasure challenges! In [Experiment 1], veteran actress Mirai Haruhara appears, stimulating Umi's pussy intensely while she watches a male and female actor having sex, bringing her to the brink of climax. After prolonged teasing, she finally receives penetration, engulfed in overwhelming pleasure coursing through her entire body. [Experiment 2], titled "External Cervical Sex," guides her into uncharted orgasmic territory by externally massaging her uterus, inducing unprecedented peaks of ecstasy. In [Experiment 3], labeled "Palatine Tonsil Gland Sex," her mouth is treated as a sexual organ, with sensitive inner mouth tissues stimulated through deep-throat penetration, making her climax with pussy juices dripping. [Experiment 4], titled "Convulsive Fainting Loud 6-Person," features five superhuman male performers relentlessly pounding her with fierce thrusts one after another, driving her to extreme frenzy—multiple orgasms, squirting, and eyes rolling back in ecstasy. Witness the stunningly fair-skinned and slender Umi Yatsugake ascend to the highest peak of pleasure she's ever known.